W DOC AIRBUS | TSM A320F

Intercell L/R XFR OPEN, ECAM Warning Shows After Fuel Transfer

TASK 28-15-00-810-829-A
Intercell L/R XFR OPEN, ECAM Warning Shows After Fuel Transfer

WARNING: OBEY THE FUEL SAFETY PROCEDURES.
WARNING: WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT: EN50020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
  • if the power-on BITE test of the Fuel Quantity Indicating Computer (FQIC) is stopped before the BITE test is completed
  • VALVE-TRANSFER, L FWD SPAR [27QM]
  • VALVE-TRANSFER, L REAR SPAR [28QM]
  • VALVE-TRANSFER, R FWD SPAR [29QM]
  • VALVE-TRANSFER, R REAR SPAR [30QM]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 28-15-00-810-803-A
Intercell XFR VALVE 27QM/70QM/9QP (Left Forward) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low Level
TSM TASK 28-15-00-810-804-A
Intercell XFR Valve 28QM/71QM/11QP (Left Rear) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low Level
TSM TASK 28-15-00-810-805-A
Intercell XFR Valve 29QM/72QM/10QP (Right Forward) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low Level
TSM TASK 28-15-00-810-806-A
Intercell XFR Valve 30QM/73QM/12QP (Right Rear) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low Level
TSM TASK 28-15-00-810-807-A
Intercell XFR Valve Failure (Left Forward) - Open When Fuel Not Low Level
TSM TASK 28-15-00-810-808-A
Intercell XFR Valve Failure (Left Rear) - Open When Fuel Not Low Level
TSM TASK 28-15-00-810-809-A
Intercell XFR Valve Failure (Right Forward) - Open When Fuel Not Low Level
TSM TASK 28-15-00-810-810-A
Intercell XFR Valve Failure (Right Rear) - Open When Fuel Not Low Level
AMM 24-41-00-861-002
Energize the Aircraft Electrical Circuits from the External Power
AMM 24-41-00-862-002
De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 28-15-00-740-002
Functional (BITE) Test of the Intercell Transfer Valves
AMM 28-42-00-740-001
Status Report (BITE)
AMM 31-60-00-860-001
EIS Start Procedure
AMM 31-60-00-860-002
EIS Stop Procedure
3. Fault Confirmation
Subtask 28-15-00-865-067-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUFUEL/FQI/CHAN/11QTA13
121VUFUEL/FQI/CHANNEL/1 AND 28QTL26
121VUFUEL/FQI/CHAN/22QTM27
Subtask 28-15-00-710-086-A ** ON A/C NOT FOR ALL
B. Test
   (1) Read the Technical Follow-Up (TFU) (Ref. TFU 28.15.00.003).
NOTE: This fault can occur if the power-on BITE test of the Fuel Quantity Indicating Computer (FQIC) is stopped before the BITE test is completed.
     (a) Make sure that there is a minimum of 1500 kg fuel in the wing-tank inner-cell.
NOTE: This lets the FQIC do a power-on BITE test of the Intercell Transfer Valves (ICTV) and the related Level Sensors. It is recommended this test is done after a refuel of the aircraft.
   (2) If the Electronic Centralized Aircraft Monitoring (ECAM) display unit is not energized:
     (a) Energize the aircraft electrical circuits from the external power AMM 24-41-00-861-002.
     (b) Do the EIS start procedure (ECAM only) AMM 31-60-00-860-001.
     (c) On the ECAM control panel, push the FUEL P/BSW.
     (d) On the ECAM System Display (SD), make sure that the FUEL page shows.
     (e) Make sure that the Refuel/Defuel panel (800VU) is closed and the aircraft is not in the Refuel/Defuel mode.
   (3) Reset the FQIC as follows:
     (a) Open, safety and tag these circuit breakers:
  • 1QT
  • 2QT
  • 8QT.
     (b) Make sure that the Fuel Quantity Indicator (FQI) for the related cell shows the X's in amber color.
     (c) After 30 seconds close these C/Bs:
  • 1QT
  • 2QT
  • 8QT.
     (d) Examine the fuel SD page and make sure that:
  • the FQI indication shows the fuel quantity
  • the ICTV's show that the XFR valve has moved from the closed to open and then back to the closed position.
NOTE: There will be a small transfer of fuel (approximately 10-20 kg) from the outer cells to the inner cells when the transfer valves operate.
     (e) If there is no fuel transfer, do Para 4. step (3).
   (4) If there is fuel transfer:
     (a) Do the functional (BITE) test of the intercell XFR valves AMM 28-15-00-740-002.
     (b) Do the FLSCU status report (BITE) test AMM 28-42-00-740-001.
4. Fault Isolation
Subtask 28-15-00-810-092-A ** ON A/C NOT FOR ALL
A. Procedure
   (1) Examine the Fuel Level Sensing System (FLSS) STATUS page. Look for one or more messages that follow:
  • XFR valve 27QM/70QM/9QP
  • XFR valve 28QM/71QM/11QP
  • XFR valve 29QM/72QM/10QP
  • XFR valve 30QM/73QM/12QP.
   (2) If no messages are shown in step (1), go to Para 5.
   (3) If one or more messages are shown, do the applicable procedure that follows:
   (4) If a transfer valve does not operate, do the applicable procedure that follows:
5. Close-up
Subtask 28-15-00-942-050-A ** ON A/C NOT FOR ALL
A. Put the Aircraft Back to its Initial Configuration
   (1) Do the EIS stop procedure AMM 31-60-00-860-002.
   (2) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
   (3) De-energize the aircraft electrical circuits AMM 24-41-00-862-002.
   (4) Make sure that the work area is clean and clear of tools and other items.
[Rev.8 from Aug 2018] 2026.04.04 04:28:32 UTC
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